Click on a day for an hourly weather forecast
The temperatures in Conwy in May are quite cold with temperatures between 8°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Conwy. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Conwy in May 2025.
If you’re planning to visit Conwy in the near future, we highly recommend that you review the 14 day weather forecast for Conwy before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 4° | 12 | 15 | 4 | 134 mm | Awful | Conwy in January |
| February | 7° / 3° | 11 | 14 | 4 | 116 mm | Awful | Conwy in February |
| March | 9° / 4° | 8 | 22 | 2 | 94 mm | Awful | Conwy in March |
| April | 11° / 5° | 6 | 24 | 1 | 73 mm | Ok | Conwy in April |
| May | 13° / 8° | 8 | 23 | 0 | 89 mm | Bad | Conwy in May |
| June | 16° / 10° | 7 | 23 | 0 | 96 mm | Ok | Conwy in June |
| July | 17° / 12° | 7 | 24 | 0 | 114 mm | Ok | Conwy in July |
| August | 17° / 12° | 7 | 24 | 0 | 121 mm | Ok | Conwy in August |
| September | 16° / 11° | 7 | 23 | 0 | 111 mm | Ok | Conwy in September |
| October | 13° / 9° | 9 | 22 | 0 | 139 mm | Bad | Conwy in October |
| November | 10° / 7° | 11 | 19 | 0 | 157 mm | Bad | Conwy in November |
| December | 8° / 5° | 12 | 17 | 2 | 153 mm | Awful | Conwy in December |